Key-seat-broaching machine.



F. J. LAPOINTE. KEY SEAT BROAGHING MACHINE. I APPLICATION FILED JUNE 10, 1912. 1,0?3,25 1. Patented Sept. 16, 1913.

N 6 SHEETS-SHEET 1.

&

F. J. LAPOINTE.

KEY SEAT BROAOHING MACHINE.

APPLIGATION FILED JUNE 10, 191 2,

1,9?3fi51. K Pa nted Sept.16,191-3.

6 %EETSSHEET Z.

P. J. LAPOINTE.

KEY SEAT BROACHING MACHINE.

APPLICATION FILED JUNE 10, 1912.

Patented Sept. 16, 1913.

6 SHEETS-SHEET 3.

Wit-rmsses:

v P. J. L APOINTE. KEY SEAT-BROAGHING MACHINE.

APPLICATION FILED JUNE 10, 1912v v ta ls? e SHEETS-SHEET 4.

a w o A n m I a r, E I I g a W" E I w l\ 4 g to I 3 '3 1 5% 5g R3 si a P. J. LA P OINTE. KEY SEATBROAOHING MACHINE. APPLIGATIQN FILED JUNE 10, 1912 Patented Sept. 16, 1913.

6 SHEETS-SHEET 6.

mhwssas: liweniar:

- i To all whom it'ntaywoneerw'."

, .EEANOIS az-meoi' me oanens a, massadnitismsj hssrehoa"To Tn'rf Ti N. i' 1 neizom'rncoz,oFNEw ditDon, GONNEUTIU' T; K oom dmiirron on MAINE;

Be it known that I', FR'A'NCIS Jt. Leno i r'm aeitizen of the: United Statesot America,

and a; r'esident ofi Hudson; in thecounty of; Middle'siex-and .-State of Massachusetts, have invented. certain new and usefiil Improve-1 mentsyinfgKey seat Broaching Machines, of

which thezfollowingfisia speeificationw This imventiom relates, to key seat breaehing. maehines-and'hae-for its object the productioiii fm1Gl1lIl8S Ofl this (glass; of simple construetionin: which the working, toolis operated: at onespeed andIat-L the-end: ofits movement automatically openatesgbelt shizft I ing mechanism, to 3 stop the nniehine; while provision: iealseinad'e for the; return of -the ywmking-fimli a -its normal position; at a lfaster'speedy' V I The! lifiyemlont consist 51311 PHOV-Idmg the I 20 driving neehanisfm With a; brake which is automatically. applied thereto-at the endv of. the movement 'ozE saidworlti'ngz; tool in either a 2 ,L The invention, further Icons-lets in p'rovid i'ng-the tool holder with a yielding. butter Wliieh'actuates the belt shiiti ng meghanism and'tth'e devices-{for applying; thebrake to the -'-driving mechanism whereby saidtool holder wrthoh-t-{injnifjto thefioperatinlg 30' partmis permitted to eontinujeits movement slightly after the jbrake jlias beenapplied and the shifting? mechanisms;have-been inent of partsvvhieh wiilbe readily under .steodiby reference to the descriptionpf the drawings and to the claims hereinafter;

locked in their normalpositions.

l The, invention' consistslfmfther' in certain novelr-jifeatures of construction and arrange;-

1ven. I i p Qfthedraivings: E1gure1. 1s a plan of a machine embodying the features of the pres entinventioni Fig; 2' representsa front ele' vat'ion of the same. firepresentsa rear 7 elevation of the same 4 represents] a vertical longitudinal section of the same, the

cuttingplane being on. line 4+4 on Fig. '1'.

Fig.-5repre sents a left Iiand'eIevatiOn; Fig. 6 represents arig'ht hand elevation Fig.- 7'

represents an enlarged section: through the screw operating devicese Fig. '8) represents a section through' the same,'- the cutting plane bEiIlg'Oll line-S- Soii Fig. Fig. 9.5

P'i-epresents a sectional detail of the handlefor controlling. the belt shifting and bralie cam rod; controlling. the operation of the brakeand F 1g. 12 represents a sectional die ,ta'1l of the notched segment: with; which the throughout-the several-figures ot the draw ings-J- 'v-ided-Withan extension 11-, this extension 11 being sup ofi a;' standa-r either endthereof are chef-brackets '13 and 15 and! l 6 oiidifierentgd-iameters, said pulley-s being adapted tOlb'Q made integral? or separate as desired. 'Interposed between the slightly less: diameter than the said pulley tapered-"to the periphery of the pulley l'l'.

10'is a vertical'plhte18 to which is secured acasing member 1 9" having abearing" for the revolu'ble shaft 1-4 'Interposed between this beaIinqQO andthe pulley 15 is a loose pulley 21,- tlie-diameter of which is slightly less than that of the diameter of said pulley- The outer edgeofdhe pulley 15. is slightly inclined to the periphery of the 'looseepulley 21. The belt 22 is'adapted to tion; cross belt 23 is adapted to normally drive the pulley 17 in the opposite and iii are provided with anti-friction mem iipon; the revoluble shaft 14:; The casing member 19"is' provided with a hub 25 in "central bore of which is' adapted' to receive gear :29 of less diameter. lVithin the central boreof the hub a-ndkeyed thereto is -a nut 30 providedwith a flange 31 through Similar characters" designate like parts I6;,the' latter havin'gJits outer edge slightly Sec ured .toor forming a part of the base v bers 24 -Wl1 1Cl1 p61'n1lt them; to freely revolve orted atitslouter endby means 12 secured to the base 10.- At- 13" in which is revolubl'y mounted a; s'haft- .145. Keyed-to thesha fvtgllzare thepulleys pulley- 1 6 and the bracket 13" "is loosely fmounfed uponthefsh a-ft, 1'4; a pulley 17' of r '90 normally drive the pulley 21in one dircc-' direction. The hubsof'botli the pulleys 17''.

which i s mounted a removable sleeveQG, the T the hub 27 ofa driving-gear28,"this gear 28'havin'gsecured thereto by means of. i I screws or other securing members another which" bolts- 32' "extend threaded t the head of? the gear 28-.1: Within the hub of the I In the drawing*s,, 10; represents a base pro? f "lock the. rod 60;. from,furthe A N p '1 a movement; 1 ahe'momnann; however, 1 f, the:

onto thefixedl pulley" 1-5 and the the end of its "Lepression: 88 (mid tlielfiillfdia-meter of' said rod. The raisingiof the brake armwilifremove the shoe 89 fromcontact with the pe riphery} of thefixedphllhy 1 5-. While thisvmove'ement is occurring; the-ibelt 22 is simul taneously shifted f'roin the loose? pulley 21 shaft 14 isthen-rotated ina direction to cause,

--through the driving mechanism 442.9, such a: rotation ofthe' nut 30 as move the screw 38to theright of Fig". 4 oft-hedrawings; thereby efiecting operation of the Workingtool' the; screvvt38- approaches 'm'o'vement to the right, the

arm.- S'Z'bn the'hea'd' Will come: into con- "met with the stop inemberQEQ-and cailse the roch 601:0 move toward the right of-Fig. 4

and' therod 81 to movein the oppositedirec--- tion, this movement shifting the belt '2 2ba'ck to its normal position upon the lobse pulley LZl'and bringing fixed pulley '15,.

thebrakeflarm' 84 overthe Weight 90 to move said arm"suih'cient 1y about its pivot into the depressions 88150- 5 25 periphery-"of the: fixed pulley pre-"g cause the shoe 8am firmly contact withithe' vent further :i'otation; th'e reo'f; 'lhisflmov'e: mentof the rodfiO- returns the handle -67 to its normal p'osition,l therehy pennritting the pin 169 thereonfto-fenten th 7 0 and pulley; 15," is -liable' to contifi e' the rotation ofithe'id'rivm v me han sm-hr before the-'a'ct-ion of'thebrake-can effect a- I complete 'st-oppagethereofl Asduring this ccontmued rotation therods: 81 are locked from further; reciprocation by means otthe pin 69 extending into thef-notcli'm, in ury would bedone to th e machine'Were the balanced yielding-member '53.

I The upwardly extendinglfinger 57 'having .45 ,m=ov ment tothe older againstfthe tension to ret-urn t -posi-tion,-the"hand1e 67 is movedr-to t of Fig; 2, thusl-imoving'the rod '60? 'stop me'mbers 58 and 59 Fig? 1. 'f The nut the opposite direction and; cause the tool 1 holder'to be jmo-vedto faster speed] Whenthe come in contact with thelstop' memberi 59 a and moved it until locked byf the' l'1andle.5 stops in th'ispositi onv and iiermits a further right ofiFige 4, of the tool of the'rigght hand S'pTihg-S. This forms "ve important feature of the invention: g -Whe ewonzin tool t normal to Ltls r htandi' h ment of the rod 81 Will -causethecross belt 23 to be moved ontoithesm'al l clpu'lley 16, and the brake arm 84: ,to b ted- 'a'st moves from the depression'S'S,

ea-1 of. Fig; 4m

ing arm" '57- reachesfthei'stopfl-member thereby permitting I. theroosting ashort time":

oluble shaft parallel with s-desired he right andjthe IQ S pulleyadjacent will move the rod to its normal position as indicatediin Fig; 4:, and simultaneously the belts will be shifted and the brake shoe 89 "moved into a: position to prevent further rotation 0f theshaft 14-.'. The yielding- 'buifer .3 54,- 55 and 57 will operate in this movement the same manner as has been described of the movement of the tool holder; i

in the opposite direction.

fWh'en' it is desired to change thespeedof the' entire machine for any particularpur-- :1

pose, the operator opens the door' 418; and seizes the handle 47 and moves" the sleeve 45,;along the shaft 14 so that the pinion' itl' Will become disengaged from thevgear 29 and the pinion 46 will mesh with the gear 28'.

The housing 49 serves a useful purpose" in protecting the- -end of the screw; from dirt and -'other""foreign substances which might injure item it passesithrough the nut 30. At the same t'iine'itpreventsj the open a-tor from-coming in contact with; the screw. hen the nut 30 becomes-worn this housing .49can be removed, and, by removing the 1 "screws 32 the nut may be-ta'ken out androany manner "with ion on said shaft; a gear on saidnut mesh-- placed by another Wit hoht' interfering in? the driving -,1nech-anisms contained 'within the casing" 1'9. Obviously 1 this is of considerable advantage as it saves a recipro-' mg Withsaid pinion; fast and loose'fpulleys on said shaft; andmeans cooperating with said pulleys for driving said sh-aft alt'ernately in opposite directions'. 1' I 2. In a'machineoi the class described,(.the

combination of a working tool; a recip'r'deating; toolkholder consisting in par't of .a' f onrevolilble screw;- a nutflthereon rev-3 oluble shaft parallel with-said screw; 21

pinion on said shaft; a gear .on said nut .meshing with saidpinion; [two pulleys of different diameters keyed to said shai't-a to each". keyed pulley andiflhavlllg aLperiphery equal in Width to he length of movement of said belts in either direction from their normal posit-ions said loose pulleys being adapted to be driven in opposite directions by two belts normally pcsitionedrthereon; and means for simul- 'tan'eously moving-said belts to bringone of upwardlyextendf' ,3;- In amachme-ot the class described, the

them" up'ona keyed "pulley;

a t pulley combination of avworking tool; a reciprocatingtool holder consisting 1n part of a nonrevoluble screw; a nut thereon; a reva keyed pulley;

oluble shaft parallel with said screw; a pinion on said shaft; a gear on said nut meshing with said pinion; two pulleys of different .diameters keyed to said shaft;'a

loose pulleyadjacent to eachkeyed pulley said loose pulleys having normally positioned thereon two belts movable in opposite directions; means for simultaneously moving said belts to bring one of. them upon and a brake member normally engaging said large keyed pulley and movable from contact therefrom when either belt ismoved into engagement with either of said keyed pulleys.

4. In a machine of the class described, the combination of a working'tool; a reciprocating tool holder consisting in part of a nonrevoluble screw; a nut thereon; a revoluble shaft parallel with said screw; a pinion-on said shaft; a gear on said nut. mesh-.

ing witlif'said pinion; two pulleys of 'difierent diameters keyed to said shaft; a loose pulley adjacent to each keyed pulley said loose pulleys shifting sing tool holder consisting in part of a non- 'revoluble screw; a nut-thereon; a revoluble shaft parallel with said screw; a pinion on said shaft; a gear on said nut meshing with said pinion; two pulleys of different diameters keyed to said sha t; a loose pulley adjacent to each keyed pulley said loose pulleys having normally positioned thereon two belts movable in opposite directions; means for simultaneously moving said belts to bring one of them upon a keyed pulley; a member movable with the belt shifting devices; a shoe carried thereby; a weight for normally retaining-said shoe in contact with the larger keyed pulley; and a fixed rod parallel with said shaft extending through an opening in said movable member and having a cam depression therein opposite said larger fixed pulley.

6. In a machine of the class described,

the combination of a working tool; a reciprocating tool holder consisting in part of a nonrevoluble screw; a nut'thereon; a rev-.

oluble shaft parallel with said screw; a pinion on said shaft; a gear on said nut meshing with said pinion; two pulleys of different diameters keyed tosaid shaft; a loose pulley-adjacent to each keyed pulley said loose pulleys having normally positioned thereon two belts movable in opposite directions; means for simultaneously moving said belts to bring one of them upon. a keyed pulley;'a member movable with the belt shifting devices; a shoe carried thereby; a weight for normally retaining said shoe in contact with-the larger keyed pulley; and means for adjustingsaid shoe relative to said movable member. r

7. In amachine of the class' deseribed, the combination of a working tool; a reciprocating tool holder consisting in part of a nonrevoluble screw; a nut thereon; a revoluble shaft parallel with said screw; a pinion on 'said shaft; a gear on said n'ut meshing with said pinion; twp fast pulleys and two loose pulleys on said shaft adapted to be driven. by two belts movablein opposite directions said fast pulleys being interposed between said loose pulleys; a rod parallel with said shaft movable endwise; two belt shifting devices carried by said movable rod and adapted normally to retain said belts upon the loose pulleys; and means for moving ,said rod in either direction. to shift one ofsaid belts onto a fixed pulley and the other belt onto another portion of its loose pulley.

- 8. In. a machine of the class described, the combination of a working tool; a reeip rocating tool holder consisting in part of a nonrevolublc screw; a nut thereon; arevoluble shaft parallel with said screw; a pinion on said shaft; a. gear on said nut meshing with said pinion; two fast pulleys and two loose pulleys on said shaft adapted to be driven by two belts movable in opposite directions, said fixed pulleys being interposed between the loose pulleys; a rod paral-. lel with said shaft movable endwis'e;-belt shifting devices carried by said movable "rod and. adapted normally to retain said belts upon the loose pulleys; means "for moving said rod in either direction to shift one of said belts onto a fixed'pulley and the other belt onto another portion of its loose pinion OH'Sllld shaft; a gear on said nut meshing with said pinion; fast and loose pulleys on said shaft adapted to be driven by two belts movable in opposite directions; at rod parallel with said shaft movable endwise; belt shifting devices carriedby said movable rod and adapted normally to.

retain said belts upon the loose pulleys;

means for moving said rod -in either directlon to shlft one of said belts onto a fixed pulley; and means controlled by the move- 3Q v to. engag with the larg'erfcf said- ,K d

" In, "a machine oft the'combmation of a orking tool; awrecip: V 'ocating tool holder consisting in part of a 10 y luble shaft parallel" with said screw a pulley;- means controlled the moizeinent of saiol op. oslte direction for returning said belt,

screw for moving said-nod in the to a loose-pulle and a brake carried by said movable ro normally engaging a fixed pulley e class described nonre ol-uble s'c1 'e W ;'-a nut. thereon; a revo- .'--i.0 n 0n sa id shaft-ya gear on said-nut mesh- 1 a d shaft I controlled by themovement.

for moving said rod in' the ti n f r returning said beltit-de lo s p111 pinion; fast and loose pulleys M adapted to be driven by two belts movable in opposite directions a rod parallel with said shaft. movable 'endwise; belt shifting'devices carried by said m l-la illg with said ble rod and adapted normally to, retain said belts upon.

moving said rod in eitherclii'eotion to p ley; t

the loose pul ys; ,nieans. f

one of said beltsontoh fix d screw opposite dire ley; q, member-secured to. sa id mov bl rod and movable therewith, hav ng an ope/h lls.

- through its free end; ,fi.Xed rodfex el fling said member. s 11.111- a machine ofx-theclass-described,

' the combination of agworking tool";-a recip-i thr ugh aid -openin g nd scantl .presslon therein Oppositethe larg'eii' figg'ed pulley; j a; sh-oe on said: member-E xe lalilfed fr feed {of pulleys; and v a Weight on the rocatin g tool holdei jconsi ting, i art e f-s nonrevoluhle screw;

luhle. shaft-parallel movable endWiSe on said shaft; .twopimjo i on: said sleeve of. difierent diameters; gears,

' on Said nut adapted tomesh' withseid 1pmions; fast'and'loose 1 meansycooperating with said i l .l'drlvmg" s id shaft pulleys; on said. shift;

pulleys 130ithe other pinion with its gear the combination of a working tool; a,-- ;re ci p-' diameters keyed to said, shaft; a'loose pulleylocating tool holder consisting in parti'of'a nonrevoluble screw; luble shaft. parallel i .pinions on said shaft; gears on saidnut of diifercnt diameters; means for moving '65 a nut thereon; a, reve w th [said screw two either pinion into'mesh with its-geanendsimultaneously disengage'the other pinion from the gear; two, pulleys of d fferent adjacent to each keyed pulley: saidp'ulle'ys being adapted to. be. driven by two-belts movable in opposite directions; and means "for simultaneously moving said belts to r ng either of them upon one. of ,Sfli keyed:

Pu leys. ,l

. w is, In it thesi eem ut' diameters keyed Fb enga e by 2 nut. themon :1. --reY0 with said screw; es eeye alternately. in oppb i $i tio1is;;:and' eans foi movin said I: j lg v 'tc dis'engagej one pinion from its gear" ami'engage In a machine of the class, described,

the ombination ofa working oe sr e, meeting t ol hol er c si ti inonrevoluble screw; lu ljej'slleft paralle Width. of Said-fixed. pulleys and adapted to be driven-by two belts movable ine pe ite dir ctions; fshiftingmechanism for simultm neously moving" said f them uponjone 301 o 'recilproca-blefin l bea'i'ings mech'anism ffjo'rmer "willcause sa d belt shifting media and" stop, members o Said-*- rod adapted to 'ofii sImoYemeI t-in either d fi i l oe t the} combination of "a working tool al iecip-i .o nble shaft arallel, w h said .s e v'; alpine ent" diameters key "belts moy-agble in" o 'isziiclsbelts tebrinfg Iolf said keyed pulleys; a member movable keyed pulley;v e rod ecipi-oc'zible in heal- I ings mechanism connecting said rod and movemen of t 'rod adapted to engag d. "by' holder: at the end i s'mov m' n in i her 'thecombina' n eta wak ng-1 l l rociiting 'to l holdeifconjsisting. in part of a, nenrevolubleis e ii a ut "th e a rev-v oluble shaft parallel witlf s'o id screw; at pin Pulley i nt ofse lifkey dipuue saia pulleys hem? bel s move-b sgiid rodkand shifting mechanism whereby muse an opemti n I of, the-lat e; .St P lii beltsto bringfeithei' said il zeyecl pulleys; ia,

lbw ting tool holder consisting in peptof {sf nomievolnble screw; e nut thereonja rey-i' in on said shaftge gear-on said nut mg, with Said pin n; O- P l y f-idi L ,d to-sa d shaft; a, loose pulley a jacent o e ch keyed f p ll y :said

pulleys ljheing adapted to beoi i'iven by two 1 ppositedirections; shiftijng mechanism} for simultaneously moving; eitheij-of them-"upon one with th belt hif ing i ev cie' ;i ho 1-;

eight; for inormel r temmg aid iwen a twith the rg r.

shifting mechanism: whereby; the j endwise former, will cause. said belt. shifting mechanismto be movedinipthe cp osits dir t-ion ,r ndf opxm' 's r! ai i said "tool 10 on said shaft; 2; gear Qnsdid nut Inesjhing with, said pinion two. pulleys ofmhflen ent diemeters keyed .td-Sfi-idjfihitft-{it loose:

edeptedjto' be .dfiven by two 1 e opposite directions belt shifting mefi ifinisln therefor; az rod recip-j roeahlelin bee-rings; mechanism connecting he endwise movem ntof th former wil so connecting said-1 0d end shifting mechanism wheli byfthe ii i e' mov ment f h $11 111 to be moved in theopposite clirec-tiom js said 0011 holder; at the-end spl eiln'ejmach ne of the-class dcsciibeii, s

direction 3095661; the shifting of s'zihigbeltsf- 1 bers on said rod; and a yielding bufi'er carr ed by. said a stop member in the movement thereof and effect an operation of saidbclt shifting deing with said inion; ent diameters ,reyed v J pulleyadjacent to each l's'pulleys .beingadapted to be driven. by two belts movable in opposite pressed rodmounted in a vices.

16, In D the combination of a worklng tool; a rec-1procating tool holder consisting in part or -a nonrevoluble-screw; a nut thereon; a'revoluble shaftparallel with said screw"; a pinion on said shaft; a gear on said. nut meshtwo pulleys of difierto said shaft; a loose keyed pulley said 7 directions; mechanism for simultaneously moving said belts I -to bring either of them upon oneof. said keyed pulleys; 'a reciprocable rod connected to said beltshiftingdevices andprovided with lateral, extensions; and a spring bearing in said v vtool holder .and adapted to'engage one of provided witha .end; and a spring "said extensions to effect a movement of the belt shifting devices.

17-. In a, machine of the class'described, the combination of a Working tool; a reel rocating tool holder consisting in part of a f. nonrevoluble screw; a nut thereon; a rev- 30 r [ion on said shaft; a gear on said nut mesholuble shaft parallel with said screw; a pining with said pinion; two pulleys of different' diameters keyed to said shaft; -a loose pulley adjacentto eachkeyed pulley said thecombination of a working tool; a reciprocating tool holder consisting in part of a 4 nonrevoluble screw; a nut thereon; a revoluble shaft parallel with said screw; a pinion on said shaft; a gear on said nut meshing -with said pinion; two pulleys of different diameters keyed'to said shaft; a loose pulley adjacent to, each keyed pulley said pulleys being adapted to be driven by two belts movable in opposite directions; mechanism for simultaneously moving said belts to bring either of themupon one of said keyed pulleys; a reciprocable rod connected to said belt shifting devices and provided with lateral extensions; arod freely movable in a bearing in said tool holder and provided with a shouldered head at each end a spring between each head and said bearmg; and a projection on one of said heads adapted in tool holder adapted'to engage a machine ofthe class described,

the movement of said tool liold'er to engage said lateral extensions.

l9. Ina machine of the class described, the combination of a working tool; a reciprocating tool holder consisting in part of a nonrevoluble screw; a nut thereon; driv "inglncchanism for said nut; a casing for said nut and driving mechanism; and a' tubular member securcdto said casing and forming a housing for the end of said screw. 20. In a machine of the-class described,

the combination of a working tool; a reciprocating tool holder'consisting in part of 'a nonrevoluble screw; guides adapted to support one end of said screw; a fixed support; a nut removably securedfto said support and surrounding said screw; driving mechanism keyed to said nut; and a removable sleeve in'said support surrounding the hub of said driving mechanism.

e 21. In a machine of the class described, the combination, of a casing having alined bearings; aremovable sleeve in each bear mg; a driving mechanism wlthln said casing consisting in part of a gear having aline hubs revoluble' n sa d sleeves and a central bore enlarged at one end; a nut positioned within the enlarged end-of said bore and;

secured to said gear; a working tool; and a reciprocating tool holder consisting in part of anonrevoluble screw threaded to said nut and extending through the central bore of said gear. W f

22'; In a machine of the-class described, the combination of a casing having alined bearings; a removable sleeve in each bearing; a'driving mechanism within said casing consisting input of a car having alined hubs revoluble in said s eeves and a central bore enlarged at one end; a nut positioned within the'enlarged end of said' bore and secured to said gear; a working tool; two grooved annular members interposed between said gear and one of said removable sleeves'; antifriction members in said grooves adapted to sustain the end thrust during the operation of said working tool; and a reciprocating tool holded consisting in part of a nonrevoluble screw threaded to said nut and extending through the central bore of said gear.

23. In a machine of the-class described, the combination of a working tool; a tool holder consisting in part of a nonrevoluble" engage one of said projecting members and cause a movement of said rod to return said drlvnlg mechanlsmft'o a neutral posltlon.

2%. in amuehlne of the elites descnbed,

the cembinatiom of a workin toola tool holder consisting in part of a nonrevoluble screw; :1 nutthereonTotntablein either di- "re'ctien; meelninism for drivil lg 'sa'id nut; a rod reclprocable n1 bearlngs; ,meansmter- ,pesed between sand rod and drlvlng mechamsm for'causing the'movement of the latter 1n elt-her dlI'CtlOIl' by the end movementof 'SELid rod; projecting members secured to said rodya devlee for movlng szud'rod 1n either 'Witnesses:

direction to start said driving mechanism;

and cause a movement of said'i'od to return sald drlnng meehumsm to a neutral p0s1- tion.

Signed by me at 4 Pest Office Sq., Beston,

Mass, this 28th day of Februan 1912.

-' FRANcIs J. LAP'OINTE.

VVAL'IER E. L MBARD, NATHAN C. LQMBARD. 

